Sampling-surface orientation and clast macrofabric in periglacial colluvium

Auteurs :
MILLAR, S.W.S.
NELSON, F.E.

Description :
To isolate the influence of sampling-surface orientation on the macrofabric of periglacial colluvial deposits, clast orientation measurements were obtained from 7 paired horizontal and vertical exposures in turf-banked solifluction lobes on Niwot Ridge, Colorado Front Range. Fabrics obtained from vertical faces were stronger than those from horizontal exposures in 6 of the pairs. Near-horizontal sampling surfaces yield less biased results than vertical exposures, owing to operator perceptions, procedural difficulties, and the relative thinness of the layer affected by colluvial processes.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2001, vol. 26, n°. 5, p. 523-529, Collation : Illustration, Références bibliographiques : 25 ref.

Date :
2001

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley